基于相量测量的电压稳定裕度计算及减载方案  

Voltage stability margin computation and under-voltage load shedding scheme based on phasor measurement

作　　者：周念成[1] 廖彦洁[1] 颜伟[1] 余娟[1] 母燕妮[1] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《中国电力》2012年第5期6-10,共5页Electric Power

基　　金：输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709208);重庆市自然科学基金资助项目(CSTC2009BB6190)

摘　　要：根据变电站实时测量的相量信息,计及数据量测误差,建立考虑等效电动势相角变化的外网最小二乘等值模型,求解精确的实时电压稳定裕度。提出一种基于实时电压稳定裕度的低压减载方案,建立了变电站紧急切负荷综合策略,实现在线动态计算切负荷量。设计了新型低压减载控制装置,软硬件平台设计采用标准化、模块化,通过高精度采样和实时数据处理,有效实现了提出的低压减载方案,保证了系统的安全稳定运行。According to reahime phasor information measured in substation, a least squares external network equivalent model considering the equivalent voltage angle change and measurement error is presented to calculate voltage stability margin. An under-voltage load shedding scheme based on real-time voltage stability margin is proposed. A comprehensive strategy for online emergency load shedding is established. A new under-voltage load shedding device is designed to implement the proposed scheme. The device adopts standardized and modular design in software and hardware platform. With high accuracy sampling and realtime data processing, the device ensures safe and stable operation of power system.

关 键 词：低压减载 电压稳定裕度 外网等值 切负荷 相量测量 

分 类 号：TM712[电气工程—电力系统及自动化]